Calipers.



M. BENOVSKY.

OALIPERS.

APPLICATION nun Ammo, 191s.

Patented Oct. 7, 1913.

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MICHAEL BENOVSKY, OF CHICAGO, ILLINOIS.

GALIPERS.

To all whom it mag concern.

Be it known that 1, MICHAEL BENovsKY, citizen of .eiustria-llungary, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Calipers, of which the -toll-owing is a specification.-

The present invention relates to certain new and useful improvements in calipers, and has for its object to provide a device of this character in which the legs of the instrument have a screw adjustment, and which embodies novel features of construction whereby the adjusting nut is mounted and housed in such a manner that all danger of accidental turning thereof when handling the device is eliminated.

Further objects of the invention are to provide calipers of this character which are comparatively simple and inexpensive in their construction, which can be easily and quickly adjusted as may be required, and which will accurately hold the adjustment while being handled, without danger of accidental turning of the adjusting nut and the consequent destruction of the adjusted position of the instrument.

WVith these and other objects in View, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a front elevation of a pair of calipers constructed in accordance with the invention, the legs of the calipers being shown in a closed position. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation of the upper portion. of the calipers with the legs in an open position, portions being broken away and shown in section to more clearly illustrate the construction of the device, and Fig. f is a transverse sectional view on the line 4ii of Fig. 1.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

Specifically describing the present embodiment of the invention, the numeral 1 designates the head or stock of the calipers, the said head being flattened in the plane of Specification of Letters Patent.

Application filed April 30, 1913.

Patented Get. "2, 1913.

Serial No. 764,716.

the calipers and being provided at the lower end thereof with the downwardly projecting and diverging arms 2. The extremities of these arms 2 are enlarged and bifurcated as indicated at 2 to receive the upper ends of the legs 3 which are pivot-ally mounted upon the pivot pins 1. An axially disposed finger piece 5 projects upwardly from the head 1 and this finger piece is grasped when handling the instrument. The head or stock 1 is provided with an opening 6 within which the adjusting nut 7 is disposed, the said adjusting nut being rigidly secured in some suitable manner as by means of the pin 8 to the reduced spindle 9 at the upper end of the adjusting screw 10. The adjusting screw 10 is disposed axially of the head or stock 1 and the spindle 9 passes upwardly through the head from the bottom thereof, being journaled in the head both above and below the opening 6. A cross head 11 has a threaded connect-ion with the adjusting screw 10, opposite ends of the said cross head being pivotally connected by pins 12 to the lateral arms 18 which are integral with and project inwardly from the upper ends of the legs 3 said pins 12 operating within the slots 12 The legs 3 may have the free ends thereof curved inwardly toward each other, as shown upon the drawing, and by turning the adjusting screen 10 and causing the cross head 11 to travel down or up thereon, the legs 3 may either be swung apart or brought toward each other. The adjusting screw 7 is housed Within the opening 6 at a point below the finger piece 5, so that the finger piece can be grasped and the instrument handled in the usual manner without danger of accidentally turning the adjusting nut and destroying the adjustment of the device. The opposite sides of the head or stock 1 are provided with the transversely disposed depressions lat which serve to effectively expose the sides of the adj usting nut 7 so that the said adjusting nut can be readily engaged by the fingers of the hand for turning the same when desired.

Having thus described the invention, what I claim as new and desire to secure by Letterse Patent, is

1. The herein described calipers including a flattened stock provided with a transverse opening and formed with downwardly extending arms and also with an upwardly projecting finger piece, an axially disposed adjusting screw arranged between the arms and formed with a spindle which is journaled in the stock and passes through the opening thereof, an adjust-ing nut arranged withinthe opening and rigidly applied to the spindle, a cross head having a threaded engagement with the adjusting screw, legs upon the before mentioned arms, and lateral arms projecting from the legs and having a pivotal connection with the cross head.

2. The herein described calipers including a tinns'v'ersely flattened stock formed with a transverse opening, and also provided upon opposite sides thereof with transversely extending finger receiving depres'- s'ions, the said stock being formed with downwardly extending arms and also with an aim-army projecting finger piece, an axially disposed adjusting screw arranged between "the arms and formed with a re- 5 copies 6': this iiaftbht may be obtained for five cents duced spindle which is journaled in the stock and passes through the before mentioned opening thereof, an adjusting screw arranged within the opening and rigidly applied to the spindle, the sides of the adjusting screw being exposed Within the before mentioned finger receiving recesses on opposite sides 'of the stock, a cross head having a threaded COnnection with the adjusting screw, legs pivotally mounted upon the arn'i's of the stock, and lateral arms projecting from the legs and pivotally connected 'to 'the cross heath In -testimony whereof I afliX my signature in presence of two Witnesses.

MICHAEL BENOVSKY. VV'it'nesses:

Jos'nrrr Kv'oarm, JOHN sorfnsrnic.

each, by aiiar'ssi'flg the Commissioner of Patents,

Washihgton, 1). C3 

